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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/02/01 06:15:51 UTC
[jira] [Assigned] (SPARK-19420) Confusing error message when using
outer join on two large tables
[ https://issues.apache.org/jira/browse/SPARK-19420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-19420:
------------------------------------
Assignee: Apache Spark (was: Xiao Li)
> Confusing error message when using outer join on two large tables
> -----------------------------------------------------------------
>
> Key: SPARK-19420
> URL: https://issues.apache.org/jira/browse/SPARK-19420
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Xiao Li
> Assignee: Apache Spark
>
> When users use the outer joins where both sides of the tables are too large to be broadcasted, Spark will still select `BroadcastNestedLoopJoin`. CROSS JOIN syntax is unable to cover the scenario of outer join, but we still issue the following error message:
> {noformat}
> Use the CROSS JOIN syntax to allow cartesian products between these relations
> {noformat}
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